CVE-2026-73055
Shescape before 2.1.15 Home Directory Disclosure via BusyBox
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
Shescape before 2.1.15 (and 3.0.0 before 3.0.2) fails to properly escape tilde (~) characters in assignment contexts on Unix systems where the shell is explicitly configured to "sh" or true and /bin/sh points to BusyBox. Using the escape and escapeAll APIs with untrusted input in an assignment prefixed to a command, an attacker can inject a tilde payload to disclose the user's home directory location and, depending on usage, alter the location on which a command operates.
| CWE | CWE-116 |
| Vendor | ericcornelissen |
| Product | shescape |
| Published | Aug 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
ericcornelissen / shescape
0 < 2.1.15
References
github.com: https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j44h-fqhh-fh28 github.com: https://github.com/ericcornelissen/shescape/commit/d86bf2ae22961c73458bddf70dd06adf9dadb36c github.com: https://github.com/ericcornelissen/shescape/commit/7cba30594c16a21524706efe2f6c6c9d8923f411 vulncheck.com: https://www.vulncheck.com/advisories/shescape-before-home-directory-disclosure-via-busybox
Credits
🔍 alimony ericcornelissen